关键词: 嗜人按蚊, 疟疾, 溴氰菊酯, 浸泡蚊帐

Abstract: Aim:Distribution,ecological feature and malaria transmission effect of Anopheles anthropophagus were investigated in malarial epidemic areas of Guangdong Province. Effect measures for the control of mosquito vectors and malaria were studied in the distribution regions of An.anthropophagus, which could substitute for indoor residual spray. Methods: The investigation methods of mosquito vector are conducted. Evaluation of bednets impregnated with deltamethrin for the control of malaria transmitted by An.anthropophagus and An.sinensis. Results: An.anthropophagus was found in 12 cities and counties in Guangdong. The peak seasons of An.anthropophagus in nature were from July to September, which was in accord with the malaria peak incidence. The natural positive sporozoite rate were 0.34%～0.54%. On average,the entomological inoculation rate calculated by three methods were 0.084,0.665 and 0.215 respectively, indicating that the workers might get malaria infection if they stayed at the camp for 1.5～11.9 days. The measure of bednets impregnated with deltamethrin in the malarial epidemic areas could reduced malaria incidence rate by 64.7%～92.7%. This measure was adopted for the control of malaria transmitted by mosquito vectors in 12 provinces of China. Tlhe cost of measureeconomized 10 million RMB a yearthanthat of indoorresidualspraymethod. Conclusion: An.anthropophagus was o species of mosquito, with was human blood sucking preference and endophilic. The distribution of An.anthropophagus was extensive in Guangdong. It was the most important vector for malaria transmission than the other moquito vectors. The results showed that bednets impregnated with deltamethrin against mosquito vectors had a high and lasting effecfts, excito-repellent,feeding inhibition,deterrent effect and an effectivein decreasing malaria transmission. The measure can substitute for indoor residual spray as an effect measure for malaria control.